Thomas is a core developer of the JRuby project and he is also an employee of Sun Microsystems. Tom has been using Java for over a decade and Ruby over half a decade. At Sun, he is working to make JRuby a piece of software that will capture the hearts and minds of Ruby and Java developers everywhere. Tom is also working to make Ruby a first-class citizen on the JVM. Tom, along with Charles Nutter, will be writing a book on JRuby this year.